linux-kernel - Re: [PATCH 0/2] perf: Improve user regs sampling

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Date:	Mon, 5 Jan 2015 11:46:16 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	秦承刚(承刚) 
	<chenggang.qcg@...baba-inc.com>,
	Stephane Eranian <eranian@...gle.com>,
	root <chenggang.qin@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	秦承刚(承刚) <chenggang.qcg@...bao.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Namhyung Kim <namhyung@...il.com>,
	Mike Galbraith <efault@....de>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Yanmin Zhang <yanmin.zhang@...el.com>
Subject: Re: [PATCH 0/2] perf: Improve user regs sampling

On Sun, Jan 04, 2015 at 10:36:18AM -0800, Andy Lutomirski wrote:
> This seems to improve the situation on x86_64 from almost entirely
> broken to mostly working.  Tested with:
> 
> perf record -e cycles --call-graph=dwarf ls

looks good to me.. also:

Tested-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka

> 
> Andy Lutomirski (2):
>   perf: Move task_pt_regs sampling into arch code
>   x86_64, perf: Improve user regs sampling
> 
>  arch/arm/kernel/perf_regs.c   |  8 ++++
>  arch/arm64/kernel/perf_regs.c |  8 ++++
>  arch/x86/kernel/perf_regs.c   | 90 +++++++++++++++++++++++++++++++++++++++++++
>  include/linux/perf_event.h    | 12 +++---
>  include/linux/perf_regs.h     | 16 ++++++++
>  kernel/events/core.c          | 19 ++++-----
>  6 files changed, 137 insertions(+), 16 deletions(-)
> 
> -- 
> 2.1.0
> 
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